height = 1.75
weight = 80.5
bmi = weight / (height ** 2)
print(f'BMI = {bmi:.1f}')
if bmi < 18.5:
    print('过轻')
elif bmi < 25:
    print('正常')
elif bmi >= 25 and bmi < 28:
    print('过重')
elif 28 <= bmi < 32:
    print('肥胖')
else:
    print('严重肥胖')